weapons in FFXI arent like the weapons in other FFs, but there are gods and hypernotorious monsters that are really hard, gods take a full alliance of 18, sometimes a lot more for some monsters. there is a dragon named Vrtra that we took almost 100 people to and we still lost. if that works for ya then yeah there are, if you arent satisfied with 100 people not being able to kill a mob, then no lol